import java.util.Stack;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 苏西西
 * Date: 2023-11-15
 * Time: 16:08
 */
public class Test {
    public static void main(String[] args) {
        Stack<Integer>  stack = new Stack<>();
        stack.push(1);
        stack.push(2);
        stack.push(3);
        Integer a = stack.pop();
        System.out.println(a);



    }
}
